My Sisters’ Tits - Sex Stories

My Sisters’ Tits

... be a mommy soon, if she doesn’t learn to be more careful” Jenny said as she sat down on the bed. “Yeah I know, but she’s a terrific fuck” I sighed as I searched the floor for my clothes. “Hmm, I could see that. I bet her pussy tastes as sweet as honey” “Well, it doesn’t” I sighed. “But it's worth it” “Ugh! You really are a pig” Jenny giggled “you wouldn’t know a nice pussy from a hamburger if your life depended on it” she said as she picked up my shorts. “At least she smells nice” she said. “Nice? My room reeks like a French whorehouse! How am I going to explain this to mom?” “If she asks, just say that I did it” she said. I knew her sacrifice wasn’t completely altruistic. If mom ever found out what went on in my room while she was at work, there would be no more female company for me, and therefore no naked, writhing girls for Jenny to masturbate to. “Thanks, I might do that. But I’ll get some fresh air in, just to be sure” “Don't you think you'd better cover that up, first?” she said as she pointed at my cock, still swollen and sticky with pussy juice. “Before you expose yourself to all the neighbors?” “Don't worry; I'll keep the curtains closed. I think I'll shower first anyway” I took a quick shower to wash off the sweat and Vanessa’s juices, dried off and wrapped the towel around my waist. As I stepped back into my room, Jenny was still sitting on my bed. “You know that was total bullshit don’t you?” she said. “What was total bullshit?” I asked. “What you said, about ...

... sperm making tits grow. It’s just an urban myth” “It is not, everyone knows it’s true” I repeated the claim I staked earlier. Of course I knew it was bull, but I wasn't going to let my sister call me a liar. Besides, how much does a lesbian know about sperm anyway? Jenny wasn’t as gullible as my friend and called my bluff. “I bet you $50 it doesn’t work” “Okay,” I accepted “and how do you want to prove who's right?” “Don’t worry about that, I know just what to do. You’ll like this.” She said with a slight smile. As I was waiting for her to unfold her plan, Jenny started to unbutton her blouse and bared her beautiful breasts. “I’ll let you cum on my left breast, but only the left.” she said, cupping the left magnificent orb in one hand. “It’s slightly smaller than the right one” she added as she grabbed the other one too. “They’re both beautiful” I sighed. Honestly, they were. “Thanks” she smiled “Now, I’ll let you cum on this one for a whole month, and if it’s still smaller than the right, you owe me $50” “And if it grows?” “I’ll give you the $50 and you can cum on both of them until they’re as big as mom’s. It’s a win-win situation” It wasn't difficult to decide. Although I fucked Vanessa and Susie at least once or twice a week, as well as the occasional one night stand, I still jacked off almost every day. Doing it on Jenny’s gorgeous tits would be a bonus, even if I was sure to lose the bet. “You’ve got yourself a deal, sis. And you know what?” “Well?” “I'm getting hard ...